Well you have all read about my bend, if you havent't then ...
http://www.rebreatherworld.com/rebre...who-dives.html
I missed putting a tick in the skin bend box. It was the full set and an eye embolisum.
Still no reason but the doc who passed me "fit to dive" reckoned it was residual nitrogen build up over several days.
I don't think that I will ever know what caused it. The only way to ensure that you don't get bent is don't dive.